You can buy a box of low-fat macaroni and cheese made with powdered nonsense. I'm not worried if I'm using four different cheeses and it's high in fat. It's real food. That's what's more important.
I am a big fan of smelly cheeses but the rest of the family don't seem to be particularly keen on them.
All the pre-made sauces in a jar and frozen and canned vegetables processed meats and cheeses which are loaded with artificial ingredients and sodium can get in the way of a healthy diet. My number one advice is to eat fresh and seasonally.